Charging switching protection device

Abstract

The embodiment of the utility model relates to the technical field of charging protection of electronic equipment, in particular to a charging switching protection device. The adapter comprises an adapter main body and a protection module, wherein the adapter main body is provided with an input port and an output port; the protection module is arranged in the adapter main body, the input end of the protection module is electrically connected with the input port, and the output end of the protection module is electrically connected with the output port; the protection module comprises a main control chip and a current detection assembly, the input end of the current detection assembly is connected with the output port, and the output end of the current detection assembly is connected with the signal enabling end of the main control chip. The protection device is reliable and effective, physical power failure is realized through a mode of detecting a load by the main control chip, the service life of a battery of the electronic equipment is prolonged, the overcharge potential safety hazard of the electronic equipment is reduced, meanwhile, the protection device does not need to change the configuration of an original charger, and the protection cost of a user is reduced while the electronic equipment is effectively prevented from being overcharged.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of charging protection of electronic equipment, and in particular to a charging transfer protection device. Background Art

[0002] With the popularity and rapid development of electronic devices, batteries, as an important energy source, are receiving more and more attention for their safety and stability. However, electronic devices are prone to overcharging during the charging process, which not only shortens the battery life, but also may cause safety hazards such as fire and explosion, posing a serious threat to the safety of users' lives and property.

[0003] At present, most of the charging systems of electronic devices on the market use hardware measures such as charging management chips and battery protection boards to prevent overcharging. Although these systems can monitor the battery power and charging status to a certain extent, there are still some problems in use. For example, the failure or aging of hardware equipment may cause the overcharging protection to fail; in addition, the chargers currently on the market are generally not equipped with anti-overcharging functions, and even some incompatible or unreliable chargers and data cables may cause overcharging, resulting in some safety hazards caused by overcharging in current electronic devices. Utility Model Content

[0004] In order to solve the technical problem that the battery life of current electronic devices is easily shortened when overcharged, and there are great safety hazards, the utility model provides a charging transfer protection device.

[0005] Specifically, the present embodiment provides a charging adapter protection device, including an adapter body and a protection module, the adapter body is provided with an input port and an output port; the protection module is arranged in the adapter body, and the input end of the protection module is electrically connected to the input port, and the output end is electrically connected to the output port; the protection module includes a main control chip and a current detection component, the input end of the current detection component is connected to the output port, and the output end is connected to the signal enable end of the main control chip, the main control chip is used to receive and disconnect the conduction between the input port and the output port according to the state change of the input signal within a preset time of the signal enable end.

[0006] Furthermore, the state change of the input signal at the signal enable terminal within a preset time includes a continuous low level state.

[0007] Furthermore, the preset time includes 10-20 minutes.

[0008] Furthermore, the current detection component includes a first MOS tube, a detection module and a socket; the gate of the first MOS tube is connected to the control end of the main control chip, the drain is connected to the output end of the socket, and the source is grounded through a current limiting resistor; the detection module includes a voltage dividing resistor, one end of the voltage dividing resistor is connected to the source of the first MOS tube, and the other end is connected to the signal enable end of the main control chip.

[0009] Furthermore, the first MOS tube is an NMOS tube.

[0010] Furthermore, the protection module includes at least a circuit board and two sockets, and the sockets are respectively arranged at the input port and the output port; the main control chip is arranged on the circuit board; the input end of the circuit board is electrically connected to the socket at the input port, and the output end is electrically connected to the socket at the output port.

[0011] Furthermore, a display module is provided on the adapter body, and the display module is used to detect and display the charging voltage and charging power of the connected load.

[0012] Furthermore, the main control chip switches the output signal of the control end according to the state change of the input signal of the signal enable end within a preset time.

[0013] Furthermore, the main control chip realizes signal reset of the control end through a reset switch or plug-in operation at a port.

[0014] Furthermore, the socket includes one or both of a USB socket and a Type-C socket.

[0015] The charging adapter protection device in the utility model is assembled between the charger and the electronic device through the adapter body, and the charging progress of the electronic device is monitored in real time through the protection module inside the adapter body, and the connection between the charger and the electronic device is disconnected after the electronic device is detected to be fully charged, thereby playing a role in physically preventing overcharging. The device is reliable and effective, and realizes physical power off by detecting the load through the main control chip, thereby improving the battery life of the electronic device and reducing the safety hazard of overcharging of the electronic device. At the same time, the protection device does not need to change the configuration of the original charger, ensuring effective prevention of overcharging of the electronic device while reducing the protection cost of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the charging transfer protection device in the embodiment of the present application;

[0017] Figure 2 This is a structural block diagram of the charging transfer protection device in the embodiment of the present application;

[0018] Figure 3 Schematic diagram of the internal circuit structure of the protection module in the embodiment of the present application.

[0019] Reference numerals:

[0020] The adapter body is 10, the input port is 11, and the output port is 12;

[0021] The protection module is 20, the main control chip is 21, and the current detection component is 22;

[0022] The display module is 30, and the voltage regulator module is 40;

[0023] The first MOS tube is Q1, the socket is J1, and the voltage dividing resistor is R1. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0026] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0027] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0028] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] In the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0030] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0031] Embodiment 1:

[0032] See also Figure 1-3 This embodiment provides a charging transfer protection device, which is mainly used for overcharging protection of electronic devices. It is arranged between the charger and the electronic device, and the input end and the output end are connected to the charger and the electronic device respectively. According to the detected load, that is, the voltage and current of the electronic device, the on and off control between the charger and the electronic device is controlled. After charging is completed, the power input of the charging interface of the electronic device is disconnected by physical power-off, thereby playing a role in overcharging protection. The device is reliable and effective. By physically disconnecting the power, the battery life of the electronic device is improved and the safety hazard of overcharging of the electronic device is reduced. The protection device is directly connected to the original charger by plugging, and there is no need to adjust the configuration or purchase additional accessories. It can effectively prevent the electronic device from overcharging while reducing the user's protection cost.

[0033] In terms of specific structure, the charging adapter protection device in this embodiment includes an adapter body 10 and a protection module 20, wherein the adapter body 10 serves as the shell of the device, plays a supporting role, and is used to load and protect internal components. The protection module 20 is mainly used to control the conduction and disconnection between the charger and the electronic device. After detecting that the electronic device is fully charged, the control circuit is disconnected to prevent the electronic device from overcharging. Structurally, the adapter body 10 is provided with an input port 11 and an output port 12; the protection module 20 is arranged in the adapter body, and the input end of the protection module 20 is electrically connected to the input port 11, and the output end is electrically connected to the output port 12. In some embodiments, the adapter body 10 is provided as a rectangular protective shell, and a cavity for assembling the protection module 20 is provided inside it. The protection module 20 is fixedly installed in the cavity, and the adapter body 10 fixes the protection module 20 in the cavity by providing a positioning seat or a fastening structure inside.

[0034] In terms of the protection module 20, the protection module 20 includes a main control chip 21 and a current detection component 22, wherein the main control chip 21 is mainly used to receive the signal of the current detection component 22, and control the conduction and disconnection between the input port 11 and the output port 12 of the adapter body 10 according to the signal. The current detection component 22 is mainly used to divide the load current and output it to the signal enable end of the main control chip 21. Among them, the signal enable end of the main control chip 21 is mainly used for current detection, which compares the current / voltage of the input signal with the preset current / voltage set internally to determine whether the electronic device has completed charging at this time.

[0035] In terms of structure, the input end of the current detection component 22 is connected to the output port 12, and the output end is connected to the signal enable end of the main control chip 21. The main control chip 21 is used to receive and disconnect the conduction between the input port 11 and the output port 12 according to the state change of the input signal within the preset time of the signal enable end. Preferably, the state change of the input signal within the preset time of the signal enable end includes a continuous low-level state. Specifically, the duration of the continuous low-level state can be a preset time. In some preferred embodiments, the preset time is preferably 10-20 minutes. Among them, the low-level state in the continuous low-level state refers to that the current voltage connected to the current detection component 22 is less than the predetermined current voltage inside the main control chip 21.

[0036] Preferably, a voltage stabilizing module 40 is further included between the input port 11 and the main control chip 21 , wherein the voltage stabilizing module 40 adopts an LDO (low dropout linear regulator) regulator, which is mainly used to ensure the stability of the input voltage of the main control chip 21 .

[0037] Please also read Figure 1-3 , some specific implementation methods of this embodiment are provided below.

[0038] Since the overcharge protection devices on the market usually use software to control the charging voltage input to the electronic device, the reliability is low in this case, and it is difficult to accurately control the effect, and there is also the problem of high cost. To this end, in this embodiment, the current detection component 22 specifically includes a first MOS tube Q1, a detection module and a socket J1, wherein the gate of the first MOS tube Q1 is connected to the control end of the main control chip 21, the drain is connected to the output end of the socket J1, and the source is grounded through a current limiting resistor. The detection module includes a voltage divider resistor R1, one end of the voltage divider resistor R1 is connected to the source of the first MOS tube Q1, and the other end is connected to the signal enable end of the main control chip 21. This design can achieve physical power off through the main control chip 21, and no charging voltage enters the electronic device after disconnection, which can play a better protective role. Preferably, the first MOS tube Q1 in this embodiment is an NMOS tube, and the main control chip 21 switches the output signal of the control end according to the state change of the input signal within the preset time of the signal enable end. When the control end of the main control chip 21 outputs a high level, the first MOS tube Q1 is turned on, and the electronic device is charged normally. When the electronic device is fully charged, the main control chip 21 detects through the current detection component 22 that the load is in a low level state for a preset time, the control end outputs a low level, the first MOS tube Q1 is turned off, and there is no charging voltage input to the charging port of the electronic device, thereby achieving overcharging protection.

[0039] In terms of the protection module 20, the protection module 20 includes at least a circuit board and two sockets, wherein the circuit board is mainly used to realize the internal wire connection of the protection module 20, and the sockets are respectively arranged at the input port 11 and the output port 12, and are mainly used to realize the input and output of the charging transfer protection device. More specifically, the main control chip 21 is arranged on the circuit board, the input end of the circuit board is electrically connected to the socket at the input port 11, and the output end is electrically connected to the socket at the output port 12.

[0040] In terms of other functions, a display module 30 is provided on the adapter body 10, wherein the display module 30 is used to detect and display the charging voltage and charging power of the connected load. The display module 30 is provided on the outer surface of the adapter body 10, so as to visualize the charging status of the electronic device.

[0041] In terms of specific configuration, the charging transfer protection device of this embodiment also includes a reset switch, and the main control chip 21 realizes the signal reset of the control end through the reset switch or the plug-in operation at the port. On the other hand, the socket includes one or both of a USB socket or a Type-C socket, which increases the application scenario of the charging transfer protection device.

[0042] In order to provide a better operating experience, this embodiment provides a specific implementation method. Specifically, during the charging process of the mobile phone, the current of the charger will pass through the first MOS tube Q1 and then flow through the current limiting resistor to ground. The current detection component 22 can detect the voltage at the source of the first MOS tube Q1. When the voltage is less than the predetermined voltage value in the main control chip, the main control chip determines that there is no load at the output end. The main control chip will re-judge after waiting for 15 minutes. If the detection signal is still not greater than the predetermined voltage value, the first MOS tube Q1 will be turned off and the power will be cut off, thereby protecting the mobile phone from overcharging. When the mobile phone is fully charged, the device turns off the power. If it needs to be recharged, unplug the charging cable, and the main control chip will re-open the first MOS tube Q1 to continue charging the mobile phone.

[0043] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A charging transfer protection device, characterized in that: It includes an adapter body and a protection module, the adapter body is provided with an input port and an output port; the protection module is arranged in the adapter body, and the input end of the protection module is electrically connected to the input port, and the output end is electrically connected to the output port; the protection module includes a main control chip and a current detection component, the input end of the current detection component is connected to the output port, and the output end is connected to the signal enable end of the main control chip, and the main control chip is used to receive and disconnect the conduction between the input port and the output port according to the state change of the input signal within a preset time of the signal enable end.

2. The charging transfer protection device according to claim 1, characterized in that: The state change of the input signal at the signal enable terminal within the preset time includes a continuous low level state.

3. The charging transfer protection device according to claim 1, characterized in that: The preset time includes 10-20 minutes.

4. The charging transfer protection device according to claim 1, characterized in that: The current detection component includes a first MOS tube, a detection module and a socket; the gate of the first MOS tube is connected to the control end of the main control chip, the drain is connected to the output end of the socket, and the source is grounded through a current limiting resistor; the detection module includes a voltage dividing resistor, one end of the voltage dividing resistor is connected to the source of the first MOS tube, and the other end is connected to the signal enable end of the main control chip.

5. The charging transfer protection device according to claim 4, characterized in that: The first MOS tube is an NMOS tube.

6. The charging transfer protection device according to claim 1, characterized in that: The protection module includes at least a circuit board and two sockets, and the sockets are respectively arranged at the input port and the output port; the main control chip is arranged on the circuit board; the input end of the circuit board is electrically connected to the socket at the input port, and the output end is electrically connected to the socket at the output port.

7. The charging transfer protection device according to claim 1, characterized in that: The adapter body is provided with a display module, and the display module is used to detect and display the charging voltage and charging power of the connected load.

8. The charging transfer protection device according to claim 1, characterized in that: The main control chip switches the output signal of the control end according to the state change of the input signal of the signal enable end within a preset time.

9. The charging transfer protection device according to claim 1, characterized in that: The main control chip realizes signal reset of the control end through plugging and unplugging operation at the reset switch or port.

10. The charging transfer protection device according to claim 6, characterized in that: The socket includes one or both of a USB socket and a Type-C socket.

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